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Ammoniation of low quality roughages using urea to improve their nutritive value for ruminant feeding Njogah, John Njihia
Abstract
This study was carried out to examine the effect of urea treatment on different roughages with respect to their degradation in the rumen. The effect of urea treatment of barley straw on dry matter intake, digestibility and weight gain was also studied. The first experiment involved urea treatment of wheat straw and orchardgrass hay. Three urea levels were used; 2, 4 and 6 g/100 g DM and the samples ensiled for 3, 6 and 9 weeks. Samples were incubated in the rumen for 1, 12, 24, 36, 48, 72 and 96 hours. Degradation constants were derived using the equation p = a + b(1 – e[sup –ct]) where 'p' represents the amount degraded at time 't'. 'a' represents the fraction which disappears rapidly, 'b' represents that fraction which will degrade in time and the rate of degradation of this fraction is represented by the 'c'. The fraction which is undegradable in the rumen can be derived as 100 - (a + b) . Orchardgrass hay had significantly larger degradation constants than wheat straw (P
Item Metadata
| Title |
Ammoniation of low quality roughages using urea to improve their nutritive value for ruminant feeding
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| Creator | |
| Publisher |
University of British Columbia
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| Date Issued |
1989
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| Description |
This study was carried out to examine the effect of urea treatment on different roughages with respect to their degradation in the rumen. The effect of urea treatment of barley straw on dry matter intake, digestibility and weight gain was also studied.
The first experiment involved urea treatment of wheat straw and orchardgrass hay. Three urea levels were used; 2, 4 and 6 g/100 g DM and the samples ensiled for 3, 6 and 9 weeks. Samples were incubated in the rumen for 1, 12, 24, 36, 48, 72 and 96 hours. Degradation constants were derived using the equation
p = a + b(1 – e[sup –ct])
where 'p' represents the amount degraded at time 't'. 'a' represents the fraction which disappears rapidly, 'b' represents that fraction which will degrade in time and the rate of degradation of this fraction is represented by the 'c'. The fraction which is undegradable in the rumen can be derived as
100 - (a + b)
. Orchardgrass hay had significantly larger degradation constants than wheat straw (P
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| Genre | |
| Type | |
| Language |
eng
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| Date Available |
2010-08-22
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| Provider |
Vancouver : University of British Columbia Library
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| Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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| DOI |
10.14288/1.0097531
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| URI | |
| Degree (Theses) | |
| Program (Theses) | |
| Affiliation | |
| Degree Grantor |
University of British Columbia
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| Campus | |
| Scholarly Level |
Graduate
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| Aggregated Source Repository |
DSpace
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Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.